You can't build a character who is a little bit of this and a little bit of that anymore;
Civil conversation begins with not intentionally saying things you know not to be true.
Its easy to dip between builds, as you well know. The only exceptions are when a power from another build requires a piece of equipment you haven't got (a ranger without an animal companion might not easily be able to use an animal companion related power, for obvious reasons), or when a power from another build requires an attack roll statistic you haven't pumped (wis/cha clerics who didn't pump str might not want str cleric powers, again for obvious reasons).
I mean, you even quoted, in your post, build options that work well together. My brutal scoundrel rogue uses one artful dodger power at the moment simply because he likes the added mobility- brutal scoundrel helps with damage and bashing people, but artful dodger adds mobility, and while my rogue focuses on damage a little more than mobility, that doesn't mean he doesn't care about mobility at all.
I mean, for the love of... implement choice defines "the path your character will take for life"?? Are you crazed? Implement choice mildly affects your career, at best. It makes you slightly more proficient at certain types of powers, and generally in a very indirect way- a wand wizard might be more willing to take powers that attack one foe, then do extra effects to adjacent foes on a hit. A staff wizard might be more willing to use close blasts and bursts, since he's better defended. And an orb wizard will be more interested in powers with saving throws. But that's hardly setting you on a path for life! Its a mild preference, at best! And you can get a second implement at level 11!
The fact that you write these sorts of things make me think that you're not really taking this conversation seriously. To the extent that a good point might be salvaged from the general idea of prefering less siloing to more, its been completely lost in the midst of all the absolutely lunatic specifics you've given.